Di Prestwidge

Di Prestwidge
The Commonwealth Scientific and Industrial Research Organisation | CSIRO · Division of Ecosystem Sciences

About

20
Publications
2,784
Reads
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398
Citations
Citations since 2017
9 Research Items
218 Citations
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201720182019202020212022202301020304050

Publications

Publications (20)
Poster
Smallholder farmers (SF) are the biggest food producers in Tanzania (TZ), where hetero- geneous mixed crop-livestock farming systems dominate agriculture (Fig 1). Feed scarcity and quality are major issues facing smallholder dairy farmers in Tanzania. Climate projections for Tanzania indicate increased length of dry seasons and severity of periodic...
Technical Report
Full-text available
Executive summary Agricultural productivity and returns for a range of crops and forages are considered for the Darwin catchments, based on the climate and soils of the Assessment area. Agriculture in the Darwin catchments is currently dominated by a mixture of large-scale fruit tree plantations and smallholder farmers of Asian vegetables and mango...
Technical Report
Full-text available
Executive summary Agricultural productivity and returns for a range of crops and forage–beef options are considered for the Fitzroy catchment, based on the climate and soils of the Assessment area. Agriculture in the Fitzroy catchment is currently dominated by extensive beef production, although there are some areas of irrigated forage crops along...
Article
Full-text available
Small ruminants such as goats are an important source of income for smallholder farmers in South Asia and Sub Saharan Africa: they may be kept as a stepping stone to owning larger and higher-value animals such as cattle or buffalo, or provide a more-profitable and less-risky alternative in marginal or densely populated areas where access to feed re...
Technical Report
Full-text available
Executive summary Agricultural productivity and returns for a range of crops and forage–beef options are considered for the Mitchell catchment, based on the climate and soils of the Assessment area. Agriculture in the Mitchell catchment is currently dominated by extensive beef production, although there are some areas of irrigated agriculture and h...
Conference Paper
Full-text available
Herbaceous forage legumes can increase whole farm production in smallholder crop-livestock systems, however their adoption by smallholder farmers remains low. To identify the potential socio-ecological niche for forage legumes in crop-livestock systems, forage legumes were tested at six villages in West Timor, Indonesia. At each village, bio-econom...
Article
Full-text available
There is renewed interest in expanded agricultural development in northern Australia supported by increasing global demand for food, the region's proximity to Asian markets, and the current government policy initiatives to support economically sustainable and vibrant rural and regional communities. The production potential, financial returns, and t...
Article
Livestock provides an important source of income and nourishment for around one billion rural households worldwide. Demand for livestock food products is increasing, especially in developing countries, and there are opportunities to increase production to meet local demand and increase farm incomes. Estimating the scale of livestock yield gaps and...
Article
Australia’s agriculture industry, particularly in the north, is characterised by supply chains of long travel distances, often in excess of 2500 km and costing up to 35% of farm gate price. Such travel distances increase the vulnerability of the industry to climatic variability and extreme events. Infrastructure investments in roads, bridges, proce...
Article
The question addressed in this paper is whether the agronomic efficiency of cropping sequences can be improved in the northern grain zone of Australia. Analysis of whole systems over multiple seasons is particularly important in cropping regions such as Australia’s northern grain zone, where farmers have the option of growing a variety of winter an...
Article
The northern Australia cattle industry is currently facing important challenges, which include increasing demand, a strong reliance on live exports, and a changing climate. This paper presents a strategic optimisation model to help the stakeholders determine the optimal location of cattle rest sites (known as spelling yards) and the optimal flows f...
Article
Policy makers in the agricultural sector are confronted with challenges which might drive land use change and ultimately agricultural profitability to a substantial degree. The challenges include questions around climate variability, demographic changes, use of land for bio-fuel production and ensuring an increase in food production. As profitabili...
Article
Maturity index (MI) is a key determinant of pea softness and ultimately retail value. Pea seed development goes through the optimal market stage for human consumption about a week before harvest. MI increases rapidly during the last 3–4 days prior to the optimal harvest which is when there is a need for better forecasting capability. Extensive fiel...
Article
The Australian sugar industry is seeking to increase profitability through better integration across a value chain fragmented among many owners. Within the cane harvesting and transport sectors, many existing inefficiencies are a result of excessive numbers of harvesting machines owned by harvester contractors and growers, and the fact that most ha...
Article
Full-text available
The supply chain of the conventional Australian sugar industry is characterized by horizontal separation between the stages. Often antagonistic relations between segments, particularly farmers and millers, led to each developing their systems for their own segment's benefit, without reference to the wider industry interests. Cane growing developed...
Article
The Australian sugar industry saw opportunities for increasing productivity and hence whole- of-industry profitability through optimising the harvest date of sugarcane, accounting for geographical and crop differences in cane yield and the sugar content of cane for different harvest dates throughout the harvesting season. Research scientists engage...
Article
On analysis has been carried out of the prospects of using lesser known trees as new crops, mainly for high quality cabinetwood production. The economic returns of 43 rainforest trees were assessed using expert opinion and the Delphi method to provide an evaluation and ranking of the most valuable species. Cuban mahogany (Swietenia mahogeni), Ameri...

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Project
This APSIM project has been set up to foster collaboration with other APSIM users. If you use APSIM, we welcome you to become a collaborator and share new findings and papers. If you wish to be added to this project, please send me a message with your RG email so I can add you as a collaborator.